TABLE 1.

Baseline Characteristics (Mean±SD) of High School Cross‐Country Runners

	Total (n=68)	Girls (n=47)	Boys (n=21)	p‐value*
Age (y)	16.2 ± 1.3	16.2 ± 1.3	16.3 ± 1.5	0.82
Height (cm)	168.1 ± 8.7	164.3 ± 6.3	176.5 ± 7.1	0.000
Weight (kg)	59.6 ± 9.0	57.1 ± 7.5	65.0 ± 9.8	0.001
BMI (kg/m2)	21.0 ± 2.7	21.1 ± 2.1	20.9 ± 3.7	0.81
Muscle strength (Nm/kg)
Right hip abductors	0.25 ± 0.08	0.25 ± 0.08	0.25 ± 0.07	0.89
Left hip abductors	0.25 ± 0.07	0.26 ± 0.07	0.25 ± 0.08	0.77
Right knee extensors	0.29 ± 0.05	0.28 ± 0.04	0.31 ± 0.06	0.06
Left knee extensors	0.28 ± 0.05	0.28 ± 0.05	0.30 ± 0.05	0.11
Right knee flexors	0.21 ± 0.04	0.20 ± 0.03	0.22 ± 0.06	0.07
Left knee flexors	0.20 ± 0.05	0.20 ± 0.04	0.21 ± 0.06	0.17
§Mean hip abductors	0.25 ± 0.72	0.26 ± 0.73	0.25 ± 0.73	0.83
§Mean knee extensors	0.29 ± 0.05	0.30 ± 0.53	0.28 ± 0.40	0.07
§Mean knee flexors	0.20 ± 0.04	0.22 ± 0.06	0.20 ± 0.03	0.10

BMI, body mass index.

^*Two sample t‐test of differences of means for boys and girls.

^§Average value of Right and Left.